Slim Ben Nasrallah, Software engineer
& founder
Based in Paris, I build products from the first idea to production: web and mobile apps, AI agents and the systems behind them.
Paris--:--:--Working worldwide
Products I built,
end to end.
Meridian
LiveIssue tracking
Issues, cycles, projects with their own Gantt, triage and insights, with a REST API, webhooks and an MCP server. The platform most of the other products are built on.
Carnetio
LiveDocs & databases
Pages with a block editor and live co-editing, and databases with table, board, calendar and timeline views.
Tracklyne
In progressProduct analytics
Funnels, retention, session replay, heatmaps, feature flags and experiments, with SDKs for the web, Node and iOS.
Storlyne
LiveE-commerce
Online stores with themes and a visual editor, cash-on-delivery checkout, multi-location inventory and B2B prices.
Cvlyne
LiveResumes
A resume and cover-letter editor with 12 templates, a keyword checker against job offers, and PDF export.
Growlyne
LiveCRM & marketing
Contacts, deals and pipelines, sequences, quotes, campaigns and forms, with email over plain SMTP and IMAP.
Vulcbase
LiveBackend platform
Every project gets its own Postgres database, a generated REST API, auth, storage with policies and realtime.
Balancelyne
LiveAccounting
Double-entry accounting for small businesses: invoicing, bank reconciliation, inventory and reports, with Tunisian tax and payroll.
Sendlyne
In progressEmail marketing
A drag-and-drop email builder, segments and A/B campaigns, delivered by its own mail server with DKIM signing.
Hellolyne
In progressCustomer messaging
A messenger widget, shared inbox, tickets, help center and outbound messages, with workflows and SLAs.
Sawti
In progressAI receptionist
Answers calls and website chat in French and books appointments, with speech recognition and voices hosted in-house.
A few of the products I’ve built. Others stay private, or are still on the bench.
Built on a foundation of
proven, boring technology.
Ruby on Rails
My first framework and still my favourite for shipping a SaaS fast: models, background jobs, mailers, admin.
- Ruby
- Ruby on Rails
Node.js
Over fifteen years of JavaScript, from small Express services to structured NestJS backends.
- Node.js
- Express
- NestJS
- JavaScript
Next.js & React
Every interface, from marketing sites to dense dashboards, in TypeScript with Tailwind CSS and shadcn/ui.
- Next.js
- React
- TypeScript
- Tailwind CSS
- shadcn/ui
Also in my toolbox
- Backend
- FastifyPythonPrisma
- Data
- PostgreSQLMongoDBClickHouseBigQueryBigtabledbtApache NiFi
- Mobile
- SwiftUI
- Infrastructure
- DockerCoolify
- Editors & realtime
- TiptapYjs
- AI
- Claude Code
The person
behind them.
I build products, from the first idea to production.
Web and mobile apps, AI agents and automations, the systems behind them. I design, ship and grow software that people actually use.
Paris · --:--:-- · 48.8566° N, 2.3522° E